A multi-path culling device

Abstract

The utility model belongs to the packaging bag elimination technical field discloses a kind of multi-path elimination equipment. Feeding mechanism is located in rack, and feeding mechanism is used to convey workpiece along first direction;Discharge mechanism is located in rack, and discharge mechanism is spaced apart with feeding mechanism along first direction;Separation mechanism is located in feeding mechanism, and multiple are provided along second direction, to separate workpiece into multiple paths;Reversing mechanism is located between feeding mechanism and discharge mechanism, and the same as separation mechanism along the number of second direction setting;Conveying mechanism is located below the junction of reversing mechanism and discharge mechanism;Recycling bin is located above discharge mechanism;When multiple workpieces are all good products, feeding mechanism, separation mechanism and discharge mechanism are located at the same height, to convey multiple good products to discharge station;When there is defective product in workpiece, discharge mechanism is raised and forms elimination gap with reversing mechanism corresponding to defective product path, and reversing mechanism corresponding to good product path is raised and is docked with recycling bin.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag rejection technology, and in particular to a multi-channel rejection device. Background Technology

[0002] In the packaging bag printing industry, the requirements for printing quality are becoming increasingly stringent. Therefore, the precision of quality inspection before packaging bags are put into use also increases. It is necessary to quickly reject defective bags after identification to prevent them from entering subsequent workflows. To improve rejection efficiency, machine rejection is usually used instead of manual rejection. However, when dealing with multiple packaging bags, rejecting only defective bags from one or a few channels will affect the counting of bags at the unloading end, increasing the difficulty of bundle counting (each bundle should contain the same number of good bags) and adding extra workload for recounting.

[0003] Therefore, there is an urgent need for a multi-path rejection device to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-channel rejection device, which is not only simple in structure, but also can separate good products from the same batch at the same work station while rejecting defective products. The multi-channel bags can be conveyed to the unloading end only when all bags in the same batch are good products, thereby ensuring that the number of good products in each channel at the unloading end is the same and ensuring the convenience of counting in bundles.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A multi-channel rejection device, comprising:

[0007] frame;

[0008] A feeding mechanism is mounted on the frame, and the feeding mechanism is used to convey workpieces along a first direction;

[0009] A feeding mechanism is mounted on the frame, and the feeding mechanism and the loading mechanism are spaced apart along a first direction;

[0010] A separating mechanism is provided on the feeding mechanism to separate the workpiece into multiple paths;

[0011] A reversing mechanism is provided between the feeding mechanism and the unloading mechanism, and the number of such mechanisms along the second direction is the same as the number of separation paths.

[0012] The conveying mechanism is located below the junction of the reversing mechanism and the unloading mechanism;

[0013] A recycling bin is located above the feeding mechanism;

[0014] When all the workpieces in multiple paths are good products, the feeding mechanism, the separating mechanism, and the unloading mechanism are at the same height to transport the good products to the unloading station. When there are defective products in the workpieces, the unloading mechanism is raised to form a rejection gap with the reversing mechanism corresponding to the defective product path, and the reversing mechanism corresponding to the good product path is raised to connect with the recycling bin, so that the defective products fall from the rejection gap to the conveying mechanism, and the good products are conveyed to the recycling bin.

[0015] Preferably, the separating mechanism includes a separating frame and a plurality of partitions. The separating frame is mounted on the frame, and the plurality of partitions are spaced apart on the frame along a second direction, with a passageway formed between two adjacent partitions.

[0016] Preferably, the partition mechanism further includes an adjustment component for adjusting the spacing between the plurality of partitions.

[0017] Preferably, the reversing mechanism includes a reversing frame, a lifting member, a reversing roller, and a power assembly. The reversing frame is disposed on the frame, the lifting member is mounted on the reversing frame, the reversing roller is mounted on the frame and is drivenly connected to the power assembly, and the output end of the lifting member is connected to the bottom of the power assembly so as to drive the power assembly to tilt up.

[0018] Preferably, the power assembly includes a reversing belt, a reversing plate, and a driven wheel. The reversing roller and the driven wheel respectively engage to tension the reversing belt. The reversing plate is located between the reversing roller and the driven wheel, with one end pivotally connected to the reversing frame and the other end pivotally connected to the driven wheel. The output end of the lifting member is connected to the bottom of the reversing plate.

[0019] Preferably, a tensioning wheel is also provided between the reversing roller and the driven wheel. The tensioning wheel is connected to the reversing plate through a connecting block, and the tensioning wheel is pivotally connected to the connecting block to tension the reversing belt.

[0020] Preferably, the feeding mechanism includes a drive roller, a driven roller, a tensioning roller, and a feeding belt. The drive roller and the driven roller respectively engage to tension the feeding belt. A plurality of tensioning rollers are arranged between the drive roller and the driven roller to tension the feeding belt, and one tensioning roller is at the same height as the driven roller.

[0021] Preferably, the feeding mechanism further includes an adjusting plate and a floating roller. The adjusting plate is slidably connected to the frame, and the tension roller, which is at the same height as the driven roller, is disposed on the adjusting plate. The feeding belt passes around the floating roller. The adjusting plate is configured to slide along the first direction, and the floating roller is configured to float in the vertical direction to adjust the preload of the feeding belt.

[0022] Preferably, the feeding mechanism includes a guide plate, which is disposed below the feeding mechanism, allowing defective products to slide down the guide plate onto the conveying mechanism.

[0023] Preferably, the guide plate has a guide portion at one end near the feeding mechanism, and the guide portion is inclined toward the unloading mechanism.

[0024] The beneficial effects of this utility model are:

[0025] This utility model discloses a multi-path rejection device. A feeding mechanism is mounted on the frame and is used to transport workpieces along a first direction. A discharging mechanism is mounted on the frame, and the discharging mechanism and the feeding mechanism are spaced apart along the first direction. A separating mechanism is mounted on the feeding mechanism, and multiple separating mechanisms are arranged along a second direction to separate the workpieces into multiple paths. A reversing mechanism is located between the feeding mechanism and the discharging mechanism, and the number of reversing mechanisms along the second direction is the same as the number of separating mechanisms. A conveying mechanism is located below the junction of the reversing mechanism and the discharging mechanism. A recycling bin is located above the discharging mechanism. When all workpieces in multiple paths are good products, the feeding mechanism, separating mechanism, and discharging mechanism are at the same height to convey the good products to the discharging station. When there are defective workpieces, the discharging mechanism tilts up to form a rejection gap with the reversing mechanism corresponding to the defective path, and the reversing mechanism corresponding to the good product path tilts up and connects with the recycling bin. This allows the defective products to fall from the rejection gap to the conveying mechanism, and the good products to be conveyed to the recycling bin.

[0026] In this equipment, the separating mechanism can divide incoming workpieces (packaging bags) into multiple paths, thereby ensuring the order and regularity of the feeding. When all incoming materials in the same batch are good products, the reversing mechanism and the unloading mechanism are both in a horizontal state. At this time, the incoming materials are directly transferred to the unloading end according to their respective paths, thereby ensuring that the number of good products in each path at the unloading end is the same. After reaching a certain quantity, they can be directly bundled and packaged (at this time, the number of good products in each path is the same), which greatly improves the convenience of counting. When there are defective products in the same batch of workpieces, the unloading mechanism is tilted up, and the reversing mechanism on the same path where the defective product is located is also in a horizontal state, while the reversing mechanism on the same path where the good product is located is tilted up. At this time, the defective product falls directly from the rejection gap onto the conveying mechanism, and the good products in this batch are conveyed to the recycling bin, thereby separating the good and defective products in a batch at the same workstation. The entire equipment has a simple structure and avoids the situation where the remaining good products after separating the defective products are mixed into the unloading end and affect the bundle counting. Attached Figure Description

[0027] Figure 1 This is an isometric view of the multi-channel rejection device described in an embodiment of this utility model;

[0028] Figure 2 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of the separation mechanism structure described in an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the partition described in an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the reversing mechanism described in an embodiment of the present invention;

[0032] Figure 6 yes Figure 2 A close-up view of part A in the middle.

[0033] In the picture:

[0034] 10. Frame; 11. Floating tank;

[0035] 20. Feeding mechanism; 21. Driven roller; 22. Driven roller; 23. Tensioning roller; 24. Feeding belt; 25. Adjusting plate; 26. Floating roller; 27. Slide rail;

[0036] 30. Feeding mechanism; 31. Drive roller; 32. Tension roller; 33. Transmission roller; 34. Feeding belt; 35. Guide plate; 351. Guide section; 36. Drive plate; 37. Rotating shaft;

[0037] 40. Dividing mechanism; 41. Dividing frame; 42. Partition; 43. Adjusting assembly;

[0038] 50. Reversing mechanism; 51. Reversing frame; 52. Lifting component; 53. Reversing roller; 54. Reversing belt; 55. Reversing plate; 56. Driven pulley; 57. Tensioner pulley; 58. Connecting block;

[0039] 60. Conveying mechanism;

[0040] 70. Recycling bin;

[0041] 100. Workpiece. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this utility model, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0046] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0047] like Figures 1 to 6As shown, this utility model provides a multi-path rejection device, which includes a frame 10, a feeding mechanism 20, a discharging mechanism 30, a separating mechanism 40, a reversing mechanism 50, a conveying mechanism 60, and a recycling bin 70. The feeding mechanism 20 is disposed on the frame 10 and is used to convey workpieces 100 along a first direction. The discharging mechanism 30 is disposed on the frame 10 and is spaced apart from the feeding mechanism 20 along the first direction. The separating mechanism 40 is disposed on the feeding mechanism 20 to separate the workpieces 100 into multiple paths. The reversing mechanism 50 is disposed between the feeding mechanism 20 and the discharging mechanism 30 and is arranged along a second direction. The quantity and number of separation paths are the same; the conveying mechanism 60 is located below the junction of the reversing mechanism 50 and the unloading mechanism 30; the recycling bin 70 is located above the unloading mechanism 30; when all the workpieces 100 are good products, the loading mechanism 20, the separation mechanism 40 and the unloading mechanism 30 are at the same height to convey the good products to the unloading station; when there are defective products in the workpieces 100, the unloading mechanism 30 is raised and forms a rejection gap with the reversing mechanism 50 corresponding to the defective product path, and the reversing mechanism 50 corresponding to the good product path is raised and docked with the recycling bin 70, so that the defective products fall from the rejection gap to the conveying mechanism 60, and the good products are conveyed to the recycling bin 70.

[0048] In this equipment, the separating mechanism 40 can separate the incoming workpieces 100 (packaging bags) into multiple paths, thereby ensuring the order and regularity of the feeding. When all incoming materials in the same batch are good products, the reversing mechanism 50 and the unloading mechanism 30 are both in a horizontal state. At this time, the incoming materials are directly transferred to the unloading end according to their paths, thereby ensuring that the number of good products in each path at the unloading end is the same. After reaching a certain quantity, they can be directly bundled and packaged (at this time, the number of good products in each path is the same), which greatly improves the convenience of counting. When there are defective products in the same batch of workpieces 100, the unloading mechanism 30 is tilted up, and the reversing mechanism 50 on the same path where the defective product is located is also in a horizontal state, while the reversing mechanism 50 on the same path where the good product is located is tilted up. At this time, the defective product falls directly from the rejection gap to the conveying mechanism 60, and the good products in this batch are conveyed to the recycling bin 70, thereby separating the good products and defective products in a batch at the same workstation. The entire equipment has a simple structure and avoids the situation where the remaining good products after separating the defective products are mixed into the unloading end and affect the bundle counting.

[0049] Specifically, such as Figure 1 , Figure 3 and Figure 4As shown, the separating mechanism 40 includes a separating frame 41 and multiple partitions 42. The separating frame 41 is mounted on the frame 10, and the multiple partitions 42 are spaced apart along a second direction on the frame 10, with a passageway formed between adjacent partitions 42. In this structure, the separating frame 41 is mounted on the frame 10, thereby improving the stability and convenience of installing the multiple partitions 42, and the passageway naturally forms between adjacent partitions 42, simplifying the overall structure and reducing processing and manufacturing costs.

[0050] In addition, such as Figure 3 and Figure 4 As shown, the separating mechanism 40 also includes an adjusting component 43, which is used to adjust the spacing between the multiple partitions 42. By setting the adjusting component 43, the spacing between the partitions 42 can be adjusted, thereby avoiding the situation where changes in the size of the workpiece 100 prevent it from passing through the channel smoothly, and improving the applicability of the equipment.

[0051] In addition, such as Figure 2 and Figure 5 As shown, the reversing mechanism 50 includes a reversing frame 51, a lifting member 52, a reversing roller 53, and a power assembly. The reversing frame 51 is mounted on the frame 10, the lifting member 52 is mounted on the reversing frame 51, and the reversing roller 53 is mounted on the frame 10 and connected to the power assembly. The output end of the lifting member 52 is connected to the bottom of the power assembly to drive the power assembly to tilt upwards. In this configuration, the reversing frame 51 is mounted on the frame 10, which improves the ease and stability of installation and also facilitates the fixing of the lifting member 52. After the output end of the lifting member 52 extends, it can automatically adjust the angle of the power assembly, thereby ensuring that good and defective products are collected in the same station, ensuring a good rejection effect and improving work efficiency.

[0052] Specifically, such as Figure 2 and Figure 5As shown, the power assembly includes a reversing belt 54, a reversing plate 55, and a driven pulley 56. The reversing roller 53 and the driven pulley 56 engage to tension the reversing belt 54. The reversing plate 55 is located between the reversing roller 53 and the driven pulley 56, with one end pivotally connected to the reversing frame 51 and the other end pivotally connected to the driven pulley 56. The output end of the lifting member 52 is connected to the bottom of the reversing plate 55. In this structure, the rotation of the reversing roller 53 drives the reversing belt 54 to rotate, and the pivotal connection between the driven pulley 56 and the reversing plate 55 ensures the smooth operation of the reversing belt 54, thereby ensuring that the reversing belt 54 can generate sufficient conveying force for the workpiece 100 and preventing the workpiece 100 from stalling. Furthermore, the reversing plate 55 is pivotally connected to the reversing frame 51. Therefore, when it is necessary to transport the workpiece 100 to the recovery bin 70, the output end of the lifting member 52 extends vertically, thereby causing the reversing plate 55 to rotate around the pivot position, thus forming an upward posture and docking with the recovery bin 70, realizing reversing collection. When the power assembly is in a horizontal state, the lifting member 52 can support the reversing plate 55 from the bottom, ensuring the stability of the reversing plate 55.

[0053] In addition, such as Figure 5 As shown, a tensioning roller 57 is also provided between the reversing roller 53 and the driven roller 56. The tensioning roller 57 is connected to the reversing plate 55 via a connecting block 58, and the tensioning roller 57 is pivotally connected to the connecting block 58 to tension the reversing belt 54. In this structure, the tensioning roller 57 can move synchronously with the reversing plate 55, thereby ensuring that the reversing belt 54 can be tensioned no matter which posture the reversing plate 55 rotates to. At the same time, the tensioning roller 57 can rotate relative to the connecting block 58, thus improving the smoothness of the reversing belt 54 during operation and ensuring a good reversing conveying effect.

[0054] like Figure 1 and Figure 2 As shown, the feeding mechanism 20 includes a drive roller 21, a driven roller 22, a tension roller 23, and a feeding belt 24. The drive roller 21 and the driven roller 22 respectively engage with the feeding belt 24. Multiple tension rollers 23 are arranged between the drive roller 21 and the driven roller 22 to tension the feeding belt 24, and one tension roller 23 is at the same height as the driven roller 22. That is, after the drive roller 21 rotates, it can drive the feeding belt 24 to rotate around the driven roller 22, and the multiple tension rollers 23 can maintain the tension of the feeding belt 24 to prevent slack. The workpiece 100 is moved along the first direction by the friction force on the surface of the feeding belt 24. The overall structure is simple, easy to install, and significantly improves the feeding efficiency.

[0055] In addition, such as Figure 2As shown, the feeding mechanism 20 also includes an adjusting plate 25 and a floating roller 26. The adjusting plate 25 is slidably connected to the frame 10. A tension roller 23, at the same height as the driven roller 22, is disposed on the adjusting plate 25. The feeding belt 24 passes around the floating roller 26. The adjusting plate 25 is configured to slide in a first direction, and the floating roller 26 can float in the vertical direction to adjust the preload of the feeding belt 24. Since the workstation where the feeding mechanism 20 receives incoming materials may not be convenient to place the entire device, the horizontal length of the feeding mechanism 20 can be extended by sliding the adjusting plate 25, thereby facilitating docking and significantly improving ease of use.

[0056] It should be noted that in this embodiment, a slider (not shown in the figure) is provided on the inner side of the frame 10, and a slide rail 27 is provided on the outer side of the adjusting plate 25. The slider is slidably connected to the slide rail 27. The frame 10 is also provided with a floating groove 11 in the vertical direction. The two ends of the floating roller 26 are set in the floating groove 11. When feeding is required, the adjusting plate 25 can be fixed on both sides by the fixing block to prevent it from sliding. When it is necessary to extend the length of the feeding end, the fixing block can be removed and the adjusting plate 25 can be slid to extend its horizontal feeding section to the preset length. At the same time, the floating roller 26 can float accordingly in the floating groove 11 to adjust the tension of the feeding belt 24. It is necessary to ensure that the feeding belt 24 is always in a taut state and to avoid it from breaking due to excessive tension, thereby ensuring a good feeding effect and improving the convenience of use.

[0057] In addition, to ensure the smooth process of removing defective products, such as Figure 2 and Figure 6 As shown, the feeding mechanism 30 includes a guide plate 35, which is located below the feeding mechanism 30. When the feeding mechanism 30 is tilted upward, the defective products can slide down along the guide plate 35 onto the conveying mechanism 60. By setting the guide plate 35, the smoothness of the defective products sliding down can be improved, and the defective products can be ensured to slide down in a preset direction, thus ensuring a good rejection effect.

[0058] In addition, such as Figure 6 As shown, a guide portion 351 is provided at one end of the guide plate 35 near the feeding mechanism 20, and the guide portion 351 is inclined towards the unloading mechanism 30. By providing the guide portion 351, not only can it provide a good guiding effect for defective products to enter the rejection gap from the end of the feeding mechanism 20, but it can also close the gap between the guide plate 35 and the unloading mechanism 30, preventing defective products from entering the gap between the guide plate 35 and the unloading mechanism 30, and preventing them from falling onto the conveying mechanism 60 through the rejection gap, thus avoiding the problem of equipment jamming and ensuring a good rejection effect.

[0059] The specific structure of the feeding mechanism 30 is as follows: Figure 1 and Figure 2As shown, the feeding mechanism 30 includes a drive roller 31, a tension roller 32, a transmission roller 33, and a feeding belt 34. The drive roller 31 and the transmission roller 33 respectively engage to tension the feeding belt 34. Multiple tension rollers 32 are arranged between the drive roller 31 and the transmission roller 33 to tension the feeding belt 34. The guide plate 35 is located below the transmission roller 33. That is, after the drive roller 31 rotates, it can drive the feeding belt 34 to rotate around the transmission roller 33, and the multiple tension rollers 32 can maintain the tension of the feeding belt 34 to prevent slack. The friction of the surface of the feeding belt 34 drives the good products to the feeding station.

[0060] It should be noted that, in this embodiment, as Figure 1 , Figure 2 and Figure 6 The feeding mechanism 30 also includes a cylinder (located inside the frame 10, not shown in the figure), a rotating shaft 37, and a drive plate 36. The output end of the cylinder is hinged to one end of the drive plate 36. The rotating shaft 37 passes through the drive plate 36 and is hinged to the frame 10, and the other end of the drive plate 36 is connected to the transmission roller 33. The guide plate 35 is connected to the drive plate 36. In this structure, when the output end of the cylinder retracts, the end of the drive plate 36 connected to it moves accordingly, and the drive plate 36 rotates around the rotating shaft 37. Consequently, the other end of the drive plate 36 tilts upward, thereby causing the transmission roller 33 and the guide plate 35 to tilt upward together, forming a rejection gap with the reversing mechanism 50. Conversely, when the output end of the cylinder extends, the drive plate 36 can drive the transmission roller 33 to move downward, switching to the conveying state. The overall structure is simple, and installation and use are extremely convenient. The switching between rejection and conveying states can be completed simply by the extension and retraction of the cylinder, significantly reducing manufacturing and usage costs.

[0061] Referring to the accompanying drawings, the workflow of the multi-path rejection in this embodiment is explained as follows:

[0062] First, the upstream identification device of this equipment identifies the workpiece 100 to determine whether there are defective products in the same batch of incoming materials, and at the same time the feeding mechanism 20 feeds the material.

[0063] Secondly, when all incoming materials in the same batch are good products, the separating mechanism 40 separates the incoming materials into multiple paths. At this time, the reversing mechanism 50 and the unloading mechanism 30 are both in a horizontal state to transfer the multiple paths of good products to the unloading station. At this time, the number of good products at multiple unloading stations is the same, which makes it convenient to count them in bundles after the quantity is reached.

[0064] Finally, when there are defective products in the same batch of incoming materials, the feeding mechanism 30 tilts upwards, the reversing mechanism 50 corresponding to the path of the defective product in the same batch remains horizontal and forms a rejection gap with the feeding mechanism 30, the reversing mechanism 50 corresponding to the path of the good product in this batch tilts upwards and connects to the recycling bin 70, so that the defective product falls from the rejection gap and the good product is recycled into the recycling bin 70 for subsequent counting and use.

[0065] In summary, the multi-channel rejection device in this embodiment is not only simple in structure, but also capable of removing defective products at the same workstation while separating good products from the same batch. Multiple bags can be conveyed to the unloading end only when all bags in the same batch are good products, thereby ensuring that the number of good products in each channel at the unloading end is the same and ensuring the convenience of bundle counting.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A multi-channel rejection device, characterized in that, include: Rack (10); A feeding mechanism (20) is provided on the frame (10), and the feeding mechanism (20) is used to convey the workpiece (100) along the first direction. The unloading mechanism (30) is located on the frame (10), and the unloading mechanism (30) and the loading mechanism (20) are spaced apart along a first direction; A separating mechanism (40) is provided on the feeding mechanism (20) to separate the workpiece (100) into multiple paths; A reversing mechanism (50) is provided between the feeding mechanism (20) and the unloading mechanism (30), and the number of such mechanisms along the second direction is the same as the number of separation paths. The conveying mechanism (60) is located below the junction of the reversing mechanism (50) and the unloading mechanism (30); A recycling bin (70) is located above the unloading mechanism (30); When all the workpieces (100) are good products, the feeding mechanism (20), the separating mechanism (40) and the unloading mechanism (30) are at the same height to transport the good products to the unloading station; when there are defective products in the workpieces (100), the unloading mechanism (30) is raised and forms a rejection gap with the reversing mechanism (50) corresponding to the defective product path, and the reversing mechanism (50) corresponding to the good product path is raised and docked with the recycling bin (70) so that the defective products fall from the rejection gap to the conveying mechanism (60) and the good products are conveyed to the recycling bin (70).

2. The multi-channel rejection device according to claim 1, characterized in that, The separation mechanism (40) includes a separation frame (41) and a plurality of partitions (42). The separation frame (41) is installed on the frame (10), and the plurality of partitions (42) are spaced apart on the frame (10) along a second direction, and a passage can be formed between two adjacent partitions (42).

3. The multi-channel rejection device according to claim 2, characterized in that, The partition mechanism (40) further includes an adjustment component (43) for adjusting the spacing between the plurality of partitions (42).

4. The multi-channel rejection device according to claim 1, characterized in that, The reversing mechanism (50) includes a reversing frame (51), a lifting member (52), a reversing roller (53), and a power assembly. The reversing frame (51) is disposed on the frame (10), the lifting member (52) is mounted on the reversing frame (51), and the reversing roller (53) is mounted on the frame (10) and is connected to the power assembly in a transmission manner. The output end of the lifting member (52) is connected to the bottom of the power assembly so as to drive the power assembly to tilt up.

5. The multi-channel rejection device according to claim 4, characterized in that, The power assembly includes a reversing belt (54), a reversing plate (55), and a driven wheel (56). The reversing roller (53) and the driven wheel (56) respectively engage to tension the reversing belt (54). The reversing plate (55) is located between the reversing roller (53) and the driven wheel (56), with one end pivotally connected to the reversing frame (51) and the other end pivotally connected to the driven wheel (56). The output end of the lifting member (52) is connected to the bottom of the reversing plate (55).

6. The multi-channel rejection device according to claim 5, characterized in that, A tensioning wheel (57) is also provided between the reversing roller (53) and the driven wheel (56). The tensioning wheel (57) is connected to the reversing plate (55) through a connecting block (58). The tensioning wheel (57) is pivotally connected to the connecting block (58) to tension the reversing belt (54).

7. The multi-channel rejection device according to claim 1, characterized in that, The feeding mechanism (20) includes a drive roller (21), a driven roller (22), a tension roller (23), and a feeding belt (24). The drive roller (21) and the driven roller (22) respectively engage to tension the feeding belt (24). A plurality of tension rollers (23) are arranged between the drive roller (21) and the driven roller (22) to tension the feeding belt (24), and one tension roller (23) is at the same height as the driven roller (22).

8. The multi-channel rejection device according to claim 7, characterized in that, The feeding mechanism (20) also includes an adjusting plate (25) and a floating roller (26). The adjusting plate (25) is slidably connected to the frame (10). The tension roller (23), which is at the same height as the driven roller (22), is disposed on the adjusting plate (25). The feeding belt (24) passes around the floating roller (26). The adjusting plate (25) is configured to slide along the first direction, and the floating roller (26) is able to float in the vertical direction to adjust the preload of the feeding belt (24).

9. The multi-channel rejection device according to claim 1, characterized in that, The feeding mechanism (30) includes a guide plate (35), which is located below the feeding mechanism (30). Defective products can slide down the guide plate (35) onto the conveying mechanism (60).

10. The multi-channel rejection device according to claim 9, characterized in that, The guide plate (35) has a guide part (351) at one end near the feeding mechanism (20), and the guide part (351) is inclined toward the unloading mechanism (30).

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